I'm having some problems with the def and return function in Python. On the top of my program I've defined:
from subprogram import subprogram
then I've defined the def in which I've included the values I wanted to be returned:
def subprogram(ssh, x_off, y_off, data_array, i, j):
if j==1:
print('shutdonw X')
# Run command.
ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command(x_off)
var_colonna_1 = data_array[i][j]
return var_colonna_1
print(var_colonna_1)
if j==2:
print('shutdown Y')
# Run command.
ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command(y_off)
var_colonna_2 = data_array[i][j]
return var_colonna_2
this is then called in the main program as:
for j in range(5, lunghezza_colonna):
if data_array[i][j] == 'V':
subprogram(ssh, x_off, y_off, data_array, i, j)
print(var_colonna_1)
I was expecting that every time the subprogram
is called, it returns the var_colonna_1
or var_colonna_2
, but the values I see when I print var_colonna_1
is always 0 even if, internally the other commands are execute (so X and Y are set in shut down). Can you help me? I don't see my coding mistake.
The function doesn't return the variable, only the value on it.
If you want to get the returned value on var_colonna_1, you should asign it, as Sayse said, you should do:
var_colonna_1 = subprogram(ssh, x_off, y_off, data_array, i, j)
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